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Degradation of high molecular weight polycyclic aromatic hydrocarbons by Pseudomonas cepacia

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Summary

When inoculated at high cell densities, three strains of Pseudomonas cepacia degraded the polycyclic aromatic hydrocarbons (PAHs) benzo[a]pyrene, dibenz[a,h]anthracene and coronene as sole carbon and energy sources. After 63 days incubation, there was a 20 to 30% decrease in the concentration of benzo[a]pyrene and dibenz[a,h]anthracene and a 65 to 70% decrease in coronene concentration. The three strains were also able to degrade all the PAHs simultaneously in a PAH substrate mixture containing three-, four-, five- and seven-benzene ring compounds. Furthermore, improved degradation of the five- and seven-ring PAHs was observed when low molecular weight PAHs were present.

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Authors and Affiliations

  1. Centre for Bioprocessing and Food Technology, Victoria University of Technology, PO Box 14428 MCMC, 8001, Melbourne, Australia

    Albert L. Juhasz & Margaret L. Britz

  2. Department of Food Technology, Victoria University of Technology, PO Box 14428 MCMC, 8001, Melbourne, Australia

    Grant A. Stanley

Authors
  1. Albert L. Juhasz
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  2. Margaret L. Britz
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  3. Grant A. Stanley
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Juhasz, A.L., Britz, M.L. & Stanley, G.A. Degradation of high molecular weight polycyclic aromatic hydrocarbons by Pseudomonas cepacia . Biotechnol Lett 18, 577–582 (1996). https://doi.org/10.1007/BF00140206

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